129719770 has 16 divisors (see below), whose sum is σ = 243648000. Its totient is φ = 49631824.

The previous prime is 129719761. The next prime is 129719773. The reversal of 129719770 is 77917921.

It is not an unprimeable number, because it can be changed into a prime (129719773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281770 + ... + 282229.

It is an arithmetic number, because the mean of its divisors is an integer number (15228000).

Almost surely, 2^129719770 is an apocalyptic number.

129719770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129719770 is a deficient number, since it is larger than the sum of its proper divisors (113928230).

129719770 is a wasteful number, since it uses less digits than its factorization.

129719770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564029.

The product of its (nonzero) digits is 55566, while the sum is 43.

The square root of 129719770 is about 11389.4587228718. The cubic root of 129719770 is about 506.2154430509.

The spelling of 129719770 in words is "one hundred twenty-nine million, seven hundred nineteen thousand, seven hundred seventy".